Global Engineers hired the following number of Class 1 engineers during the first six months of the past year. (Assume the data represents a sample.)
?
No. of Class 1
MonthEngineers Hired
January3
February2
March4
April2
May6
June0
?
a.
Determine the mean, the median, the mode, and the range for the above data.
b.
Compute the variance and the standard deviation.c.
Compute the first and the third quartiles.d.
Compute the z-scores for the months of May and June.
What will be an ideal response?
| a. | Mean = 2.833 Median = 2.5 Mode = 2.0 Range = 6 |
| b. | S2 = 4.166 |
| S = 2.041 | |
| c. | First quartile = 1.5 |
| Third quartile = 4.5 | |
| d. | Z-score for May = 1.55 (rounded) |
| Z-score for June = -1.39 (rounded) |
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